If you had to choose one number to sanity check pricing, ads, or a new product launch, it’s break-even. In minutes, you can see how many units (or how much revenue) you need to cover costs—before you risk cash or time.
What You Need
- Fixed Costs (FC): Costs that don’t change with volume (rent, salaries, software).
- Unit Selling Price (P): What you charge per unit or average order value.
- Unit Variable Cost (VC): Costs that scale with each sale (COGS, shipping, payment fees).
- For services: Use an “effective unit” (hour, project, seat, subscription month).
Core Formulas
Contribution Margin (CM):
CM = P − VCBreak-Even Units:
FC ÷ (P − VC)Break-Even Revenue:
FC ÷ ((P − VC) ÷ P)
Tip: If you sell multiple SKUs, start with your blended price and variable cost (weighted by mix).
How to Read the Result
| Signal | Meaning | What to Do |
|---|---|---|
| Break-even units feel high | Low margin or heavy fixed costs | Raise price, reduce COGS, or trim FC |
| Tiny price change moves BE a lot | You’re margin-sensitive | Test pricing; bundle to lift AOV |
| Marketing raises volume but not profit | CAC eats contribution margin | Cap CAC ≤ CM; improve conversion |
| Subscription with churn | BE depends on LTV, not one sale | Boost retention; raise ARPU |
| Seasonal or lumpy sales | Monthly BE may mislead | Model quarterly BE and cash buffer |
Common Pitfalls
- Forgetting payment fees or shipping in VC.
- Using list price instead of realized price (after discounts).
- Ignoring returns, churn, or promotional mix.
- Comparing BE to a volume target you’ve never hit.
Bottom line: Break-even is a fast sanity check. Use it to shape pricing, budgets, and campaign targets—then validate with real conversion and retention data.
Enter Your Numbers
Optional (for deeper accuracy)
Tip: If tax/VAT is passed through to customers, leave it at 0%. If it reduces your realized price, include it.
Contribution margin
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Break-even (units)
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FC ÷ (P − VCₑ)
Break-even (revenue)
—
Units × price (net)
Target-profit break-even
—
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CAC-aware break-even
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Quick Sensitivity
Break-even units if price moves:
| Price change | New price | BE units |
|---|---|---|
| -10% | — | — |
| -5% | — | — |
| Base | — | — |
| +5% | — | — |
| +10% | — | — |
Note: For multi-SKU businesses, use blended price and variable cost. If taxes are passed through, set tax to 0%. This tool is for planning only.
We’ve seen time and again how a simple break-even calculation can change the way you approach pricing, marketing, and even product development. We’ve used it ourselves when testing new offers, and it’s saved us from pushing ideas that looked good on paper but would never have turned a profit. We believe that if you make this a habit, running the numbers before you commit, you’ll spend less time guessing and more time building things that actually move your business forward.
